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Indigofera mucronata Spreng. ex DC.
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Wood, C. E. 1949. The American barbistyled species of Tephrosia (Leguminosae). Rhodora 51: 193–231,.
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Rydberg, P. A. 1923. Fabaceae–Indigofereae, Galegeae (pars). 24(3): 137–200. In N.L. Britton (ed.) N. Amer. Fl.. New York Botanical Garden, Bronx.
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